//
//  SafeArray.h
//  GCDDemo
//
//  Created by everyu on 2018/6/6.
//  Copyright © 2018年 everyu. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface SafeArray : NSObject

- (void)addObject:(id)anObject;
- (void)insertObject:(id)anObject atIndex:(NSUInteger)index;
- (void)removeObjectAtIndex:(NSUInteger)index;
@end
